CHAPTER 2

2.1 Introduction to GPS

	2.1.1 What is GPS?
	2.1.2 Satellite-Based Positioning Systems
	2.1.3 Technology Advances Driving GPS
	2.1.4 The GPS Time & Spatial Reference Systems

2.2 The GPS System

	2.2.1 System Components
	2.2.2 Space Segment
	2.2.3 Control Segment
	2.2.4 User Segment

2.3 Applications of GPS

	2.3.1 General Applications of GPS
	2.3.2 GPS Satellite Surveying

2.4 How Good is GPS?

	2.4.1 Factors Influencing GPS Accuracy
	2.4.2 Errors and Quality Measures
	2.4.3 Point Positioning Accuracy Performance
	2.4.4 Relative Positioning Accuracy Performance

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